Snap fastener



Feb. 12, 1952 F, E JOHNSON 2,585,897

SNAP FASTENER Filed Oct. 25, 1947 MEBAESH la 4 E4 Patented F eb. 12, 1952 OFFICE- SNAP Y FASTENER Frank E. Johnson,

Malden, Mass., assignor to United-*Carr Fastener Corporation, Cambridge,. Mass., a corporation of Massachusetts Application October 25, 1947, Serial No. 782,166

- The present invention relates to fasteners, and more particularly to fasteners for securing Vthe flap of paper, cardboardY and the'like envelopes to the body thereof, and aims generally to mprove existing fasteners of that type. f

vAn object of the invention is the provision of a cooperating stud and socket fastener that is extremely simple in construction and economical of manufacture.

A further object of the invention is the provision of improved stud and socket fastener members, each of one-piece construction, suitable for use asan envelope fastener and which may be of thin sheet metal construction to facilitate the feeding of. envelopes from a stack or pile,.as for example in an addressing or manifolding` machine. Y

A still further object is the provision of improved stud and socket fastener members of onepiece construction having improved means for attachment to a paper or like sheet and wherein tendency of the sheet to be sheared around the fastener is minimized. Y

Other aims and advantages of the invention will be apparent to' persons skilled in the art from a consideration of the accompanying drawings and, annexed specification illustrating and' describing a preferred construction lembodying the invention. Y

In the drawings:

Fig. 1 is a plan view of a portion of a paper or like envelope illustrating the improved fastener parts applied to the flap and body portion of the envelope; l Y

Fig. 2 is an enlarged plan View of a portion of the envelope illustrating the fastener in closed or fastener position;

Fig. 3 is an enlarged vertical sectional view as taken on the line 3 3 of Fig. 2;

Fig. 4 is an enlarged plan View of the socket fastener member;

Fig. 5 is a vertical sectional view of the socket fastener member as taken on the line 5 5 of Fig. 4;

Fig. 6 is an enlarged plan View of the stud fastener member; and

Fig. 7 is a vertical sectional view of the stud fastener member as taken on the line 'I-l of Fig. 6.

The invention comprises cooperating stud and socket fastener members, each of one-piece construction, and each having a dished or concaved -base and tubular fastener portion extending substantially normal thereto from the concaved face thereof, The base of each member is provided aolaigls. (Cl. 24-217) with integral attaching means, preferably in the form of pointed prongs, joined to the base inwardly of the peripheral edge thereof and eX-V tending inwardly from the concaved face thereof, said prongs being adapted to be bent outwardf p ly inengagement with an opposed face of a paper'.

or like sheet and being of a length` to .extend be# yond the peripheral edge of the base.`

The fastener is particularly radapted for use as an envelope or like fastener, and'isillustrated as# applied to a paper or likezenvelope having avfrontz"` I, a nap 2 and-back sections 3`which may beoverv lapped and adhesively secured along Vthe center line as is usual with many .styles of envelopes@ rl'he overlapped edges oftthe back section 3 may be apertured as atf4'to receive-thezstud of :a studi fastener-member IIIjand the flap `2 may be apar--v tured as at 5 toreceive the tubular socket of a.

socket fastener part 2|).V However, the stud .of

the studfastener lmember I 0 may be used'. toy punch the aperture at 4 when itis aflixedeto `the e back section 3 and also the tubular socket of the socket fastener part ZI] may be vused to punch-the aperture at 5 when it isaflixed .to the flap 2. I

YReferring to the drawings, the studzfastener member It is a thin dished or concaved `sheet wardly from the concaved face thereof, and prefy erably these are arranged in a circular series as shown in Fig. 6. Preferably the prongs I5 are cut from the body of the ange I4 and are joined theretoinwardly of the peripheral edge of the flange soas to provide a continuous peripheral material-engaging rim I6. The prongs I5 extend outwardly from the concaved face of the flange and are normally divergent to the axis of the tubular stud II, so that when subjected to pressure, will be fiattened outwardly toward the peripheral edge of the flange opposite the rim I6. Preferably, the prongs I5 are of suicient length so that their terminal ends will be radially outwardly of the peripheral edge of the flange I4.

The socket member 20 may be formed of a thin dished or concaved sheet metal body, preferably of circular shape and provided with an integral .The portion of the;

tubular socket barrel 2| extending outwardly from the concave face of the body and having convergent sides 22 terminating in an inturned edge 23 defining a stud-receiving opening. The sides 22 of the tubular socket 2| may be slit as at 24 and spaced at circumferential points, the slits extending from the edge 23 inwardly toward the base vrof "the so'cke'tto providefsufcient'resilience in-the socket-for snap fastener engagement with the rigid stud Il. The body flange 25. surrounding the tubular socket 2| circular series of tapered attaching prongs 26 may be con-' caved, similar to the stud, and provided withaintegrally joined to the socket' fiange'25l inwardlyf` of the peripheral edge to prvidef-fa-jeontinuous peripheral material-engaging rim the socket prongs are adapted to penetrate the 15 21:." As inltn'e case of the attaching prongs ofuthe.stud-member;`

supporting material inwardly of the peripheralt edge of the socket base and to be bent outwardly iniy spaced' relation: with. the peripherali rim 21 'and-i f forcedA into clenczhed-= engagement 1 with ythel fsupand like esupport-ingrmaterialsp resulting in a much improved fand strongen'attachment of the fastnerf'to the support.'

AIthou'ghI have `illustraterlr-and--described one Y embodiment' of thee'lfinventiom 'I fdo not intend to be restricted 'to thedetai'ls-'thereof asithegscope' of f' the invntionfis best: defined 'in vthe appended claims.

I 'claim' 1. i AH snap tration-'fofthe supporting ma-- @fastener comprising cooperating stud and sdcketemembers each kformed ofa single piece of sheetqnaterialandhaving .a 'base and v ar'rintegralrconcentric Vtubular? fastener element e' extending'substznitiallj7 normal thereto; the base off-saidstudsand socketsim'embers' beingffdished i toward their lrespective tubular-` fastener element 4 so as to be opposed in convexed relation when assembled in fastening engagement, and attaching prongs on said bases for attaching the fastener elements to a support.

2. A snap fastener comprising cooperating stud and socket members each formed of a single piece of sheet material and having a base and an integralwconcentric tubularfastener element extending-substantially normal thereto,'the base of said stud and socket members being .dished toward their respective tubular fastener element `so :asv-to be opposed in convexed relation when assembled in fastening engagement, said bases provided flwith attaching prongs formed from Within the body'V thereof and joined thereto radiallyinwardly^from the peripheral edge thereof.

3. V-A )snapl fastener comprising cooperating stud and socket fastener members adapted to be attached-to -two pieces of fragile material such as paper, each of said members being formed of a singlewpiece of thin sheet material and having'a flanged base of relatively large area adapted to -seat a-piece'of paper thereagainst and an disposed substantially normal to the base, a plu'- angularly'fextending tubular fastener partv ralityof'iattaching prongs extending outwardly fromfsaid bases inwardly portions-.thereof and on the same sides as said'.-

tubular fastener parts, said attaching prongs beingl adapted to be bent outwardly to clamp fragile materialA against the `inner sides of said' bases whereby'when such stud and socket are engaged such Afragile-'material is disposed between the.v bases thereof -so that a pull thereon'to separate said stud vandtsocket will exert'pressure on said:

bases rather than on the prongs thereby preventing tearing of such fragile material.

FRANK E.` JOHNSON.

REFERENCES CITED- The'ollowing references are iof record in the le vof this patent:

UNITED STATES PATENTS Number Name- Date 479,975 Denisl Aug. 2, 1892. 8905608' Cliff` June 16, 1908 1 1,451,612 Hausner Apr. l0, 1923"' 2,385,880 Peterson Oct. 2, 1945 FORE'IGlFTl `PATENTS Number Country Date 400,870 France lJune 26, 1909 l.

of the peripheral edge. 

